// Contains code copied from istanbul-reports (https://github.com/istanbuljs/istanbuljs/tree/main/packages/istanbul-reports).
// The link to the original license is in the VENDORED.md file in the parent directory.

var jumpToCode = (function init() {
  // Classes of code we would like to highlight in the file view
  var missingCoverageClasses = [".cbranch-no", ".cstat-no", ".fstat-no"];

  // Elements to highlight in the file listing view
  var fileListingElements = ["td.pct.low"];

  // We don't want to select elements that are direct descendants of another match
  var notSelector = ":not(" + missingCoverageClasses.join("):not(") + ") > "; // becomes `:not(a):not(b) > `

  // Selector that finds elements on the page to which we can jump
  var selector =
    fileListingElements.join(", ") +
    ", " +
    notSelector +
    missingCoverageClasses.join(", " + notSelector); // becomes `:not(a):not(b) > a, :not(a):not(b) > b`

  // The NodeList of matching elements
  var missingCoverageElements = document.querySelectorAll(selector);

  var currentIndex;

  function toggleClass(index) {
    missingCoverageElements.item(currentIndex).classList.remove("highlighted");
    missingCoverageElements.item(index).classList.add("highlighted");
  }

  function makeCurrent(index) {
    toggleClass(index);
    currentIndex = index;
    missingCoverageElements.item(index).scrollIntoView({
      behavior: "smooth",
      block: "center",
      inline: "center",
    });
  }

  function goToPrevious() {
    var nextIndex = 0;
    if (typeof currentIndex !== "number" || currentIndex === 0) {
      nextIndex = missingCoverageElements.length - 1;
    } else if (missingCoverageElements.length > 1) {
      nextIndex = currentIndex - 1;
    }

    makeCurrent(nextIndex);
  }

  function goToNext() {
    var nextIndex = 0;

    if (
      typeof currentIndex === "number" &&
      currentIndex < missingCoverageElements.length - 1
    ) {
      nextIndex = currentIndex + 1;
    }

    makeCurrent(nextIndex);
  }

  return function jump(event) {
    if (
      document.getElementById("fileSearch") === document.activeElement &&
      document.activeElement != null
    ) {
      // if we're currently focused on the search input, we don't want to navigate
      return;
    }

    switch (event.which) {
      case 78: // n
      case 74: // j
        goToNext();
        break;
      case 66: // b
      case 75: // k
      case 80: // p
        goToPrevious();
        break;
    }
  };
})();
window.addEventListener("keydown", jumpToCode);
